在oracle?11gR2以前的版本中,卸載CRS和oracle database時需要手工去刪除部分東西,從oracle 11gR2版本開始新增deinstall命令可以卸載grid和database,new oui版本中不再支持卸載,可以刪除的非常干凈,需要手工刪除的話,deinstall命令也會有提示出來。

???? 有兩種方法可以刪除oracle home和grid home

1.使用安裝好后的$ORACLE_HOME/deinstall/deinstall命令

2.從oracle官方網站上下載的deinstall工具 介質名稱為aix.ppc64_11gR2_deinstall.zip

下面為第一點的使用方法是交互式的

cd? $ORACLE_HOME/deinstall/

p570b@oracle$deinstall
Checking for required files and bootstrapping ...
Please wait ...
Location of logs /tmp/deinstall2010-03-05_12-32-34-PM/logs/

############ ORACLE DEINSTALL & DECONFIG TOOL START ############

######################## CHECK OPERATION START ########################
Install check configuration START

Checking for existence of the Oracle home location /grid
Oracle Home type selected for de-install is: CRS
Oracle Base selected for de-install is: /oracle
Checking for existence of central inventory location /oracle/oraInventory
Checking for existence of the Oracle Grid Infrastructure home
The following nodes are part of this cluster: p570a,p570b

Install check configuration END

Traces log file: /tmp/deinstall2010-03-05_12-32-34-PM/logs//crsdc.log
Enter an address or the name of the virtual IP used on node "p570a"[p570a-vip]
?>

The following information can be collected by running ifconfig -a on node "p570a"
Enter the IP netmask of Virtual IP "192.168.128.12" on node "p570a"[255.255.255.0]
?>

Enter the network interface name on which the virtual IP address "192.168.128.12" is active
?>

Enter an address or the name of the virtual IP used on node "p570b"[p570b-vip]
?>

The following information can be collected by running ifconfig -a on node "p570b"
Enter the IP netmask of Virtual IP "192.168.128.13" on node "p570b"[255.255.255.0]
?>

Enter the network interface name on which the virtual IP address "192.168.128.13" is active
?>

Enter an address or the name of the virtual IP[]
?>

Network Configuration check config START

Network de-configuration trace file location: /tmp/deinstall2010-03-05_12-32-34-PM/logs/netdc_check3943047409382157255.log

Network Configuration check config END

Asm Check Configuration START

ASM de-configuration trace file location: /tmp/deinstall2010-03-05_12-32-34-PM/logs/asmcadc_check8859913828659895984.log

ASM configuration was not detected in this Oracle home. Was ASM configured in this Oracle home (y|n) [n]: y
Is OCR/Voting Disk placed in ASM y|n [n]: y

Enter the OCR/Voting Disk diskgroup name []:
Specify the ASM Diagnostic Destination [ ]:
Specify the diskgroups that are managed by this ASM instance []:

######################### CHECK OPERATION END #########################

####################### CHECK OPERATION SUMMARY #######################
Oracle Grid Infrastructure Home is:
The cluster node(s) on which the Oracle home exists are: (Please input nodes seperated by ",", eg: node1,node2,...)p570a,p570b
Oracle Home selected for de-install is: /grid
Inventory Location where the Oracle home registered is: /oracle/oraInventory
ASM instance will be de-configured from this Oracle home
Do you want to continue (y - yes, n - no)? [n]: y
A log of this session will be written to: '/tmp/deinstall2010-03-05_12-32-34-PM/logs/deinstall_deconfig2010-03-05_12-33-38-PM.out'
Any error messages from this session will be written to: '/tmp/deinstall2010-03-05_12-32-34-PM/logs/deinstall_deconfig2010-03-05_12-33-38-PM.err'

######################## CLEAN OPERATION START ########################
ASM de-configuration trace file location: /tmp/deinstall2010-03-05_12-32-34-PM/logs/asmcadc_clean6608625374089856517.log
ASM Clean Configuration START
ASM Clean Configuration END

Network Configuration clean config START

Network de-configuration trace file location: /tmp/deinstall2010-03-05_12-32-34-PM/logs/netdc_clean5624344075530317905.log

De-configuring Naming Methods configuration file on all nodes...
Naming Methods configuration file de-configured successfully.

De-configuring Local Net Service Names configuration file on all nodes...
Local Net Service Names configuration file de-configured successfully.

De-configuring Directory Usage configuration file on all nodes...
Directory Usage configuration file de-configured successfully.

De-configuring backup files on all nodes...
Backup files de-configured successfully.

The network configuration has been cleaned up successfully.

Network Configuration clean config END

---------------------------------------->

Run the following command as the root user or the administrator on node "p570a".

/tmp/deinstall2010-03-05_12-32-34-PM/perl/bin/perl -I/tmp/deinstall2010-03-05_12-32-34-PM/perl/lib -I/tmp/deinstall2010-03-05_12-32-34-PM/crs/install /tmp/deinstall2010-03-05_12-32-34-PM/crs/install/rootcrs.pl -force? -delete -paramfile /tmp/deinstall2010-03-05_12-32-34-PM/response/deinstall_Ora11g_gridinfrahome1.rsp

Press Enter after you finish running the above commands

<----------------------------------------

enter
Oracle Universal Installer clean START

Detach Oracle home '/grid' from the central inventory on the local node : Done

Delete directory '/oracle/oraInventory' on the local node : Done

The Oracle Base directory '/oracle' will not be removed on local node. The directory is not empty.

Detach Oracle home '/grid' from the central inventory on the remote nodes 'p570a' : Done

Could not remove listed directories based on '/tmp/OraInstall2010-03-05_12-41-42-PM/installRemoveDirFile.lst' from nodes 'p570a'. [PRKC-1083 : Failed to remove listed directory in "/tmp/OraInstall2010-03-05_12-41-42-PM/installRemoveDirFile.lst" to any of the given nodes "p570a ".
Error on node p570a:null]
Delete directory '/oracle/oraInventory' on the remote nodes 'p570a' : Done

The Oracle Base directory '/oracle' will not be removed on node 'p570a'. The directory is not empty.

Oracle Universal Installer cleanup completed with errors.

Oracle Universal Installer clean END

Oracle install clean START

Clean install operation removing temporary directory '/tmp//install' on node 'p570b'
Clean install operation removing temporary directory '/tmp//install' on node 'p570a'

Oracle install clean END

Moved default properties file /tmp/deinstall2010-03-05_12-32-34-PM/response/deinstall_Ora11g_gridinfrahome1.rsp as /tmp/deinstall2010-03-05_12-32-34-PM/response/deinstall_Ora11g_gridinfrahome1.rsp1

######################### CLEAN OPERATION END #########################

####################### CLEAN OPERATION SUMMARY #######################
ASM instance was de-configured successfully from the Oracle home
Oracle Clusterware was already stopped and de-configured on node "p570b"
Oracle Clusterware is stopped and successfully de-configured on node "p570a"
Oracle Clusterware is stopped and de-configured successfully.
Successfully detached Oracle home '/grid' from the central inventory on the local node.
Failed to delete directory '/grid' on the local node.
Successfully deleted directory '/oracle/oraInventory' on the local node.
Successfully detached Oracle home '/grid' from the central inventory on the remote nodes 'p570a'.
Failed to delete directory '/grid' on the remote nodes 'p570a'.
Successfully deleted directory '/oracle/oraInventory' on the remote nodes 'p570a'.
Oracle Universal Installer cleanup completed with errors.

Run'rm -rf /etc/oraInst.loc'as root on node(s) 'p570b,p570a' at the end of the session.

Oracle install successfully cleaned up the temporary directories.

按照提示來做即可,刪除的非常干凈,然后在這上面重新安裝grid和database時,能夠成功安裝。

參考文檔：metalinkHow To Deinstall Oracle Home In 11GR2? [ID 883743.1]

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